Car-stop



(No Model.)

W. WALKER.

GAR STOP. No. 392,767. Patented Nov. 13, 1888.

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W'ILLIAM WALKER, OF JERMYN, PENNSYLVANIA.

CAR STOP.

EPECIFICATION forming part of Letters Patent No. 392,767, dated November 13, 1888.

Application filed July 12, 1838. Serial No. 279,781. (No model.)

To aZZ whom it may concern.-

Be it known that 1, WILLIAM \VALKER, of Jermyn, in the county of Lackawanna and State of Pennsylvania, have invented a new and useful Improvementin Car-Stops, of which the following is a full, clear, and exact descriptiou.

The particular object of this invention is to provide a Simple, efficient, and convenient device for restraining mining or other cars from movement on the tracks of hoistingcarriages in miningshafts and similar situations, especially when said tracks are graded to cause the car to leave the hoisting-carriage of itself when the carriage reaches the top or bottom of the shaft or other desired point.

The invention comprises various novel features of construction and arrangement; and in order that the invention may be fully understood I will first describe in detail the manner in which it may be carried into effect, and then point out its essential features in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure lis a broken side elevation of a hoisting-carriage platform provided with car-rails and with a car-stop embodying my invention. Fig. 2 is a plan View of the same.

In applying the invention to the tracked platform A of a car-elevating carriage in the manner here shown, the whole apparatus is mounted on a cast baseplatc, B, which is bolted upon the platform A alongside the rail 0.

On the top of the base-plate B, near the edge adjoining the rail G, is cast a pair of guides, D, in which are mounted, to slide across the rail 0, the rigid arms E of a forked chock-block, 1*, in such a manner that the arms E can be projected over the rail 0, as checks, to embrace one of the car wheels, as indicated in dotted lines in Fig. 1, and thus hold the car from movement in either direction, as when the elevating-carriage is moving up or down a shaft, or can be retracted from the rail 0 to permit the car to leave the carriage-platform at a station, when desired. The shank G of the forked chock-block F is also mounted to slide in a guide cast on or fixed to the baseplate 13, and is formed in its top with a transverse slot, H, oblique to its direction of motion, between the opposing bearings formed by the walls of which slot H is arranged the correspondingly-inclined cam I of a cam-bar, J, which is formed, with end arms, K L, at right angles to the direction of motion of the chockblock F.

The arms K L of the cam-bar are mounted to slide lengthwise and play slightly in a vertical direction in corresponding guides, K L, fixed to the base-plate B, so that by working the cam-bar J the wheel-chocks E can be adj usted to or from the rail 0, as desired. On the baseplate B is also erected a standardbearing, M, on which is mounted, to swing in a plane parallel to those of the guide-arms K L of the cam-bar J, an upright handle-lever, N, the lower end of which is pivotally connected to the end of the cam-bar J for operating the cam-bar and thus readily adjusting the checks E by hand.

The cam mechanism described for working the sliding chockbar is also applicable in various other situations where a similar move ment is required.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with a car-rail, of a chock adapted to'catch both sides of the carwheel, said chock arranged to be projected over the rail and retracted therefrom, guides for the chock, and a device connected with the chock for operating it, substantially as shown and described.

2. The combination, with a car-rail, of an adjustable forked chock-block and its guides, substantially as described.

3. The combination, with a car-rail, of an adjustable chock having cam-bearings and an operating-cam, substantially as described.

4. The combination, with a car-rail, of an adjustable chock having cam-bearings, an opcrating'cam, cam-guides, an operating-lever in connection with the cam, and a lever-bearing, substantially as described.

5. The herein-deseribed slide-operating device, consisting of a slot in the slide oblique 5 to its direction of motion, a sliding eanrbar having arms at right angles to the slide and a cam parallel to andworking in the oblique slot, guides for the arms of the cam-bar, and means for working the eaniba r, substantially as described.

\VILTJAllli VALKER. Witnesses:

P. S. J osLiN, JonN GRADY. 

